Telegraph-transmitter.



No. 884,381. PATENTED APR. 14, 1908. v M. S. HALING.

TELEGRAPH TRANSMITTER.

APPLICATION FILED MAY 22, 1906.

MIN

lJN TF-i) TATFQ MARK s; HALING, OF

PATENT WEAVER, MINNESOTA.

TE LE GRAPH-TRANSMITTER.

To all whom it may concern:

Be it known that 1, MARK S. HALING a citizen of the United States,residing at Weaver, in the county of Wabasha and State of Minnesota,have invented a new and useful Telegraph-Transmitter, of which thefollowing is a specification.

This invention relates to telegraph keys or transmitters, and has forits irincipal object to provide a device of simpie construction, wherebya circuit may be rapidly opened and closed in accordance with th Morseor other alphabet.

A further object of the invention is to provide a key in which separatelevers or other movable members are employed for the sending of the dotsand dashes.

A still further object of the invention is to provide a vibrator whichmay be set into operation for the transmission of dots, and in whichonly a single movement of the key by the operator is necessary for thetransmission of any number of dots.

A still further object of the invention is to provide a spring actuatedvibratory contact arranged under the control of the operator, and theoperation of which, when once started,will continue until checked by theoperator.

With these and other objects in view, as will more fully hereinafter apear, the invention consists in certain nove features of constructionand arrangement of parts, hereinafter fully described, illustrated inthe accompanying drawings, and particularly pointed out in the a pendedclaims, it being understood that various changes in the form,proportions, size and minor details of the structure may be made Withoutdeparting from the spirit or sacrificing'any of the advantages of theinvention.

In the accompanying drawings :Figure 1' is a plan view of a telegraphkey or transmitter constructed inaccordance with the invention. Fig. 2is a transverse sectional view of the same on the line 22 of Fig. 1.Fig. 3 is a detail perspective view of the various parts of the levermountings detached. Fig. 4' is a detail view, partly in section, of oneof the lever fulcrum screws. Fig. 5 is a detail perspective view of thedot transmitting ever. Fig. 6 is a similar view of the dash transmittinglever. Fig. 7 is a detail gerspective view of the vibrator detached. 1 8is a similar view of the adjustable contact I with which the vibratorcontactengages in the transmission of dots.

Specification of Letters Patent.

Patented April 14, 1.908.

1906. Serial No. 318,220.

Similar numerals. of reference are employed to indicate correspondingparts throughout the several figures of the draw lngs. The key isprovided with a suitable base 10, which is preferably formed ofinsulating material, and on the base is secured a cross bar 11, on topof which rests a bridge 12. The cross bar is provided with bearingopenings 15 for the reception of the lower pintles or trunnions 16 ofthe sending levers, and the bridge has openings for the passage ofbearing screws 17 which form supports for the upper trunnions.

tory movement in horizontal planes, instead of being arranged to move invertical planes, and said keys are provided with finger pieces 18conveniently arranged, so that they may be readily moved to and fro bythe operator.

dashes, and is normally held against a back stop 20 by means of a spring21. When the key is moved, it'engages an adjustable contact 21, andcloses the circuit. At the right hand side of the machine is the usualswitch 22, by which the circuit may be closed through the key in theusual manner, while the key is not in use.

Secured to a vertically disposed lug or bracket 23, is a leaf spring 24,said spring being permanently connected to a vibratory plate or bar 25which is provided at one edge with a vertically disposed flange 26. Thisflange is provided with an elongated slot 27 flange is mounted anadjustable weight 29 having an opening for the rece tion of the screw,so that said weight may e locked in any position to which it may beadjusted. The weight is employed to regulate the period of vibration,and when moved in the direction of the lug or bracket 23, the vibrationwill be comparatively rapid, and when moved toward the outer endof thevibrator, the vibrations become more sluggish.

.The outer portion of the plate 25 is engaged by the cushioned end ofthe dot key or lever 31, said lever being held in engagement spring 32,and forcing the opposite side of said plate into contact with acushioned ad- 'g. justable stop .33, and when held in this position, thespring 24 is placed under stress, so that if the dot key is moved, andthe V1- brator is released, it will be oscillated in a The sending keysare mounted for oscilla- The key 19 is used for the sendiiig of p 'forthe passage of a screw 28, and on the with the plate by a helicalcompression horizontal plane until the energy of the spring 24 isexhausted.

At that ed e of the plate 25 o posite flange 26 is a orizontallydisposed ar 35, the inner end of which is secured to the s rin 24, whileits outer end is connected to tile p ate 25. This bar, which ispreferably of non-circular form in cross section, carries a slidableblock 36 which -may be adjusted to any position in-the length of thebar, and then looked in place by a screw 37. This block has a downwardlyextending arm 38, that is recessed or slotted for the passage of a lightspring 39, that is connected to the plate 24 at one end and carries atits free end a contact 40 formed of platinum or other mate- The s ring39 normally rests against arial. stop 39 wien the vibrator is held frommovement, and during the operation will yield inward or in the directionof the flange 26, and then will move back into contact with the stop 39.

' 46 by which it may be bowed in the direction The function of the block36 is to determine the resiliency of the spring,

.and it may be adjusted to any position in the length of said spring.

Mounted on a suitable standard 43 carried by the base plate is an arm44, to which is secured a spring contact 45 that is arranged to beengaged by the contact 40. The spring 45 is engaged by an adjustingscrew backward, or in the direction of the flange 26,

moving some distance away from the stop 39. As the vibrator swings back,the contacts 40 and will remain in engagement with each other, until thespring 39 moves into engagement with the stop 39, then the furthermovement in the same direction car:-

ries the contact 40 away from the contact 45, and breaks the circuit. Bythis means the intervals of contact are properly determined for thesending of dots, the time the circuit is closed being equal to the timethe circuit is open. The energy stored in the spring 24 is suflicientfor the transmission of any number of dots used in any of the charatoris suflicient for the transmission of a plurality-of dots, and these aresent at exact intervals, so that they may be correctly read on thesounder or other receiver, while the work of the sending operator ismaterially reduced.

I. In a telegraph key, a spring actuated vibratory member, abarcarried-thereby, a yieldable spring contact supported by thevibrator, and a block adjustable on the bat and having a notch or recessfor the reception of the contact spring.

2. In a telegraph key, a spring mounted vibratory plate, a 'bar carriedthereby, a contact spring, a block adjustable lengthwise of the bar andhaving a notch or recess for the reception of the contact spring, andmeans for locking s id block in adjusted position.

3. In a telegraph key, a vibratory member, a yieldable contact carriedthereby, means for adjusting the sensitiveness of said yieldablecontact, a second yieldable contact with which the first yieldablecontact engages to make and break the circuit, an adj usting means forthe second contact, and a manually operable lever normally holding thevibratory member from movement.

4. In a telegraph key, the combination with abase, of a bar carriedthereby, a bridge piece mounted on the bar, bearings support-i ed by thebar, and bridge piece, key levers having trunnions mounted on thebearings, contacts under the control of said key levers for the sendingof dots and dashes, respectively, the outer ends of' said key leversbeing arranged adjacent'to each other, and being provided with fingerpieces for engagement by the operator.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two witnesses.

I MARK S. HALING.

Witnesses: V

J. H. Hlrcncoon,

C. H. STAUFF.

